Microsoft Defender isn't bad, but it's not enough to fully protect your PC. You don't have to pay extra, though—just use one of the top free antivirus apps we've tested.

A: Windows Defender Antivirus (known simply as Windows Defender in the past) is a fully capable means of antivirus protection for Windows PCs. Is it a replacement for other free versions of threat ...

In 2025, most devices feature built-in antivirus software that scans files you attempt to download, blocking anything it deems suspicious. Antivirus tools also perform automated scans to remove ...

Windows Defender has been available as a built-in antivirus for Windows 10 and earlier for several years now. The antivirus has grown quite popular with Windows users thanks to being lightweight and ...

Antivirus software is necessary to install on a computer as it offers protection against several threats that can harm a computer. Windows 11/10 computers come with a built-in free antivirus software, ...

In the cybersecurity space since 1988, Avast — that’s us — knows a thing or two about keeping you safe. We’ve become recognized industry leaders and that’s why our antivirus software is trusted by ...